煤与稻杆共液化性能研究

通过与神府煤和稻杆单独热解和液化的对比，研究了神府煤与生物质稻杆的共热解和共液化行为，考察和揭示了两者之间的协同作用。热重分析表明，稻杆的热解温度较低，在与神府煤共热解时，由于在较低温度下稻杆热解形成的自由基对煤热解的促进作用，使得混合物实际的热解失重高于对应的加权平均计算结果。共液化结果表明，神府煤与稻杆之间存在着明显的协同效应，并因液化反应条件的不同而不同。在较高的液化反应温度和较长的反应时间，由于煤本身的热解速率增加，系统内供氢能力的不足导致逆向缩合反应速率增加，减弱了两者的协同效应。在实验条件范围内，当稻杆配入量为50%，在400℃，60min的反应条件下，神府煤与稻杆共液化时产生的协同效应最大。此时，共液化转化率和正己烷可溶物分别高于对应加权平均计算值的14.8%和9.7%，气体产率也同时降低了2.6%。

Co-liquefaction properties of Shenfu coal and rice straw

The co-pyrolysis and co-liquefaction behaviors of Shenfu coal(SC) and rice straw(RS) were investigated.The synergistic interaction between SC and RS was examined by comparing the pyrolysis and liquefaction performances of each material with those of their mixtures.TG analysis suggests that the pyrolysis temperature of RS is low.Pyrolysis of RS can form free radicals at lower temperature,which can promote the pyrolysis of coal when it is co-pyrolyzed with SC,resulting in larger weight losses of their mixture...